Probability vs. Non-probability Sampling

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    Anna Alvarez

    Sampling is a technique used in choosing the respondents in a research paper. For instance, there are 5000 qualified respondents on the criteria set by the researcher. To reduce the data, one must use a sampling method to obtain the best number or choose the best people to represent the group.

    There are two types of sampling in conducting research: probability and nonprobability. Probability pertains to an equal method of choosing the number of participants using some techniques such as stratified sampling, snowball technique, and others.

    Meanwhile, non-probability sampling aims to maintain equal opportunities too. The selection of respondents is based on criteria set by the researcher. The method is often subjective and selective. This is recommended for small or indefinite groups.

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